Three to seven inches of snow fell Friday night and Saturday morning in the northern Sierra Nevada Mountains. The Lake Tahoe area saw up to five inches.

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An upper-level low pressure system is slowly moving across the region this weekend and can be thanked for the early season snow. The frozen precipitation can be seen as a blessing, since snowmelt provides up to 75 percent of the West's freshwater supply.

(MORE: September Soaker A Welcomed Sight to Parched West)

Other parts of the country have already seen snow, including record-early snowfall in Rapid City, South Dakota earlier in September.

The accumulating snow may impact travel and result in some road closures in the higher passes including Highways 4, 88, 89, 108, 120 and 203.

The snow will come to an end on Sunday as the low pressure system moves farther east.

(FORECAST: Sequoia National Park | Lake Tahoe)

Anyone with travel or outdoor plans in the are this weekend should be prepared for cold and wet conditions.

MORE ON WEATHER.COM: Summer Snow 2014